The coefficient of restitution (COR) is a measure of the restitution of a collision between two objects: how much of the kinetic energy remains for the objects to rebound from one another vs. how much is lost as heat, or work done deforming the objects. The mathematics were developed by Sir Isaac Newton in 1687.
Definition of squall. 1  intransitive verb. : 2  to cry out raucously : scream. 3  transitive verb. :  to utter in a strident voice.
Dirty, filthy, foul, squalid refer to that which is not clean. Dirty is applied to that which is filled or covered with dirt so that it is unclean or defiled: dirty clothes. Filthy is an emphatic word suggesting something that is excessively soiled or dirty: filthy streets. Both dirty and filthy can refer to obscenity: a dirty mind, a filthy novel. Foul implies an uncleanness that is grossly offensive to the senses: a foul odor. Squalid, applied usually to dwellings or surroundings, implies dirtiness that results from the slovenly indifference often associated with poverty: a squalid tenement.